Enhanced Air Stability in REPb3 (RE = Rare earths) by Dimensional ...
Supporting information for
Enhanced Air Stability in REPb3 (RE = Rare earths) by Dimensional Reduction Mediated Valence Transition Udumula Subbarao, Sumanta Sarkar, Rajkumar Jana, Sourav S. Bera, Sebastian C. Peter* New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore, 560064, India
Tables Table S1: Rietveld Refinement composition and EDX compositions obtained for YbPb3_N 24h sample. Compound
YbPb3_N
Rietveld Refinement composition
EDX composition
(For 24h sample)
(For 24h sample)
Yb
Pb
Yb
Pb
27.26
73.88
31.64
68.36
Table S2: Crystallite size calculated using Scherrer formula on the powder XRD data and EDX compositions obtained for YbPb3_N, YbPb3_P and YbPb3_C of 24 and 48h. Compound
Crystallite size (nm) 24h
48h
YbPb3_N
24.369
51.72
YbPb3_P
40.85
46.16
YbPb3_C
20.66
27.49
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Figures
Figure S1: The crystal structure of YbPb3 (left side) as viewed along the c-axis; the unit cell is outlined as green solid lines and the coordination environment (right side) of Yb and Pb.
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Figure S2. Experimental and simulated powder patterns of YbPb3 nanoparticle in the presence and absence of surfactant at 24h.
Figure S3. Experimental and simulated powder patterns of YbPb3 nanoparticle in the presence and absence of surfactant at 12h.
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Figure S4. Experimental and simulated powder patterns of YbPb3 nanoparticle in the presence and absence of surfactants at 36h.
Figure S5. Experimental and simulated powder patterns of YbPb3 nanoparticle in the presence and absence of surfactants at 48h.
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Figure S6. Typical EDS spectrum for YbPb3_None, YbPb3_PVP and YbPb3_CTAB for 24h sample.
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Figure S7. TEM image and the corresponding particle size histograms of YbPb3_N for 24h sample.
Figure S8. TEM image and the corresponding particle size histograms for YbPb3_N for 48 sample.
Figure S9. TEM images of YbPb3 (48h) synthesized by solvothermal method in the presence of PVP (a) and CTAB (b). Inset figures show corresponding SAED pattern. 6
Figure S10. Magnetization as a function of applied magnetic field at 2 K for YbPb3 bulk and nano materials (24h).
Figure S11. Temperature dependent magnetic susceptibility (χm) and inverse susceptibility (1/ χm) of YbPb3_N for 48h sample at an applied field of 1000 Oe. The Curie-Weiss fitting is shown as red line. 7
Figure S12. Magnetization as a function of applied magnetic field at 300 K for YbPb3 nanomaterials in lower applied magnetic field for 24h sample.
Figure S13. Experimental and simulated of LaPb3 nanoparticle in the presence and absence of surfactant at 24h.
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Figure S14. Temperature dependent magnetic susceptibility (χm) of LaPb3_B, LaPb3_N and LaPb3_C at 1000 Oe, inset figure shows the magnetization as a function of applied magnetic field at 300 K for LaPb3_B, LaPb3_N and LaPb3_C nano materials.
Figure S15. Temperature dependence of magnetic susceptibility at 10 Oe magnetic field of YbPb3_P, YbPb3_C, YbPb3_N and YbPb3_B at 24h.
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Figure S16. Experimental PXRD of YbPb3_B 1st day, 30 th day and 100th day comparison with simulated YbO0.5 and YbPb3.
Figure S17. Experimental PXRD of YbPb3_N 30th day and 100th day comparison with simulated PbO and YbPb3.
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Figure S18. Linear fitting of βrcosθ vs. 4sinθ curve obtained from Williamson-Hall (WH) method for the compounds YbPb3_B and YbPb3_N.
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Figure S19. PXRD comparison of (a) YbPb3_B and (b) YbPb3_N after TGA measurements at 800 0C.
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Figure S20. PXRD comparison (a) YbPb3_P and (b) YbPb3_C with simulated YbPb3 over a period of 150 days.
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Figure S21. XPS spectra of Yb4d in different samples YbPb3_bulk, YbPb3_N, YbPb3_P, YbPb3_C.
Figure S22. XPS spectra of YbPb3_N sample in different time interval.
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Figure S23. PXRD comparison EuPb3_B and EuPb3_N (without surfactant) with simulated EuPb3.
Figure S24.TEM image of EuPb3 (a) spherical nanoparticle (b) corresponding ED pattern of without surfactant after 24 hrs.
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Enhanced Air Stability in REPb3 (RE = Rare earths) by Dimensional Reduction Mediated Valence Transition Udumula Subbarao, Sumanta Sarkar, Rajkumar Jana, Sourav S. Bera, Sebastian C. Peter* New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore, 560064, India
Tables Table S1: Rietveld Refinement composition and EDX compositions obtained for YbPb3_N 24h sample. Compound
YbPb3_N
Rietveld Refinement composition
EDX composition
(For 24h sample)
(For 24h sample)
Yb
Pb
Yb
Pb
27.26
73.88
31.64
68.36
Table S2: Crystallite size calculated using Scherrer formula on the powder XRD data and EDX compositions obtained for YbPb3_N, YbPb3_P and YbPb3_C of 24 and 48h. Compound
Crystallite size (nm) 24h
48h
YbPb3_N
24.369
51.72
YbPb3_P
40.85
46.16
YbPb3_C
20.66
27.49
1
Figures
Figure S1: The crystal structure of YbPb3 (left side) as viewed along the c-axis; the unit cell is outlined as green solid lines and the coordination environment (right side) of Yb and Pb.
2
Figure S2. Experimental and simulated powder patterns of YbPb3 nanoparticle in the presence and absence of surfactant at 24h.
Figure S3. Experimental and simulated powder patterns of YbPb3 nanoparticle in the presence and absence of surfactant at 12h.
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Figure S4. Experimental and simulated powder patterns of YbPb3 nanoparticle in the presence and absence of surfactants at 36h.
Figure S5. Experimental and simulated powder patterns of YbPb3 nanoparticle in the presence and absence of surfactants at 48h.
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Figure S6. Typical EDS spectrum for YbPb3_None, YbPb3_PVP and YbPb3_CTAB for 24h sample.
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Figure S7. TEM image and the corresponding particle size histograms of YbPb3_N for 24h sample.
Figure S8. TEM image and the corresponding particle size histograms for YbPb3_N for 48 sample.
Figure S9. TEM images of YbPb3 (48h) synthesized by solvothermal method in the presence of PVP (a) and CTAB (b). Inset figures show corresponding SAED pattern. 6
Figure S10. Magnetization as a function of applied magnetic field at 2 K for YbPb3 bulk and nano materials (24h).
Figure S11. Temperature dependent magnetic susceptibility (χm) and inverse susceptibility (1/ χm) of YbPb3_N for 48h sample at an applied field of 1000 Oe. The Curie-Weiss fitting is shown as red line. 7
Figure S12. Magnetization as a function of applied magnetic field at 300 K for YbPb3 nanomaterials in lower applied magnetic field for 24h sample.
Figure S13. Experimental and simulated of LaPb3 nanoparticle in the presence and absence of surfactant at 24h.
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Figure S14. Temperature dependent magnetic susceptibility (χm) of LaPb3_B, LaPb3_N and LaPb3_C at 1000 Oe, inset figure shows the magnetization as a function of applied magnetic field at 300 K for LaPb3_B, LaPb3_N and LaPb3_C nano materials.
Figure S15. Temperature dependence of magnetic susceptibility at 10 Oe magnetic field of YbPb3_P, YbPb3_C, YbPb3_N and YbPb3_B at 24h.
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Figure S16. Experimental PXRD of YbPb3_B 1st day, 30 th day and 100th day comparison with simulated YbO0.5 and YbPb3.
Figure S17. Experimental PXRD of YbPb3_N 30th day and 100th day comparison with simulated PbO and YbPb3.
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Figure S18. Linear fitting of βrcosθ vs. 4sinθ curve obtained from Williamson-Hall (WH) method for the compounds YbPb3_B and YbPb3_N.
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Figure S19. PXRD comparison of (a) YbPb3_B and (b) YbPb3_N after TGA measurements at 800 0C.
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Figure S20. PXRD comparison (a) YbPb3_P and (b) YbPb3_C with simulated YbPb3 over a period of 150 days.
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Figure S21. XPS spectra of Yb4d in different samples YbPb3_bulk, YbPb3_N, YbPb3_P, YbPb3_C.
Figure S22. XPS spectra of YbPb3_N sample in different time interval.
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Figure S23. PXRD comparison EuPb3_B and EuPb3_N (without surfactant) with simulated EuPb3.
Figure S24.TEM image of EuPb3 (a) spherical nanoparticle (b) corresponding ED pattern of without surfactant after 24 hrs.
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